Lubricant-injector.



J. E. PETTiT. 'LuamcAm INJECTOR. APPLICATION FILED FEB- 7. I912. Patented M15 3,

I is

' to be lubricated.

ell

L'UIBRXCANTJNJECTGil).

Application filed February To all whom it may concern;

Be it lmown that lf, JONATHAN it. PETTIT, a citizen of the United States, residing at Los Angeles, in the county of Los Angcles and State of Californie, have invented new and useful improvements in Lubricant-lo jeotors of which the following is a specification;

Thisinyention relates to improvements in lubricating devices and articularly to lubricant injectors, end it IS an objcctof the invention to provide a lubricating device which may be quickly charged with the lubricstin materiel and which may then bo operate to force the lubricant upon parts it is also an object of the invention to provide it lubricant iii e'cto1' having an elongated opening in the sides thereof, through which lubricant may be readily forced into the device after which the openingis closed and the ports brought to proper position for torcing the same into machinery to be lubricated in the accompanying drawing iorming a, part or? this specification, a

Figure 1 is a side elevation of the lubr cant injector constructed in accotdz .nce with the present invention. 77

Fig is a longitudinal sectional View A! through the outer casin of the injector, the inner casing thereot being shown in elevation.

F g. 3 is a transverse sectional View through the barrel of the injector, taken upon'the line 3--3 of Fig. 1.

Fig. 4 is a similar transverse sectional View but showing the casing open for receiving the lubricant with which it is to be charged. l

Fig. 5 is a similar transverse sectional View but showing a piston hlving a flexible or yielding packing provided thereon.

Fig. 6 is a detail View in side elevation of the head end of the injector showing the modified form of the detachable securing means employed for holding the head in place. a

The details and features of the invention will now be more particularly described,

specification of Letters latest device to any suitable machinery or parts of mechanism. The'seid barrel is preterably cylindrical and is provided with an elongated'opening T in its side Well, the said opening extending for the greater portion oi the length of said barrel l fitliin the barrel an inner casing 8 also cylindrical and made to fit snugly Within the barrel 5, the said inner casing is provided with an elongated slot 9 in one side which is adapted to be brought by the turning of the inner casing, into coincidenoo with the opening 7. In this position lubricant can be quickly and readily placed within the device through the said coinciding openings. By turning the inner casing 8 so as to move the slot 9 out of register with the opening Y, the said opening will be closed and the escape of materials from Within the device be prevented, except through the discharge spout 6.

The said inner casing 8 provided with a head 10 by which the inner casing may be moved, the said heed being adapted to rest against overhang the edge of the open endof the barrel 5. The outer peripherttl edge oi saici head 10 is also rough enecl or milled tofacilitate the turning of the some.

in. order to lock the inner casing; with respect to the barrel 5 so as to prevent its being moved longitudinally with respect thereto, the said barrel is provided With an in shaped slot of the bayonet joint type Which is adapted to receive a retaining pin or detent 12 carried by the said inner cas ing, as will be clearly uiidcrstood by retcronce to Fig. 1. This connection between the parts permits ofthe separation 01 the same when necessary, but normally locks them together although pern'iitting of the tur11- ing of the inner casing to close the opening 7,

The mechanism is provided With means for forcing the lubricant from the barrel, consisting preferably in a piston 13, con nected with and operated b y a piston rod 14-. The end of the said piston rod has a swivel engagement with the piston, being provided with an. enlarged head Ito-adapted to movably engage a recess 16 formed upon the piston. The side Walls of the piston which engage the inner casing are preferably mode of suliicient Width to preyent the piston,

from binding in its action within the said casing. The said piston 18 preferably made of metal, the peripheral wall thereot being usually formed with an OK set portion ,17

The piston rod 14: is preferably screw threaded and adapted to engage internal threads formed in a collar 20 which is placed upon the said rod. Clhe rod also passes through a smooth bearing 21 formed in the head'lO, the head being provided with an exteriorly threaded flange 22 which'pro jects' beyond the surface thereof sufiiciently to engage an internally threaded flange 23 formed 11 on the collar 20. The outer end of the re 14k is also provided with an operating handle or head 24; of any desired construction whereby the said piston rod may be 'reciprocated .or rotated.

"When it is desired to force the grease from the injector by straight reciprocation of the rod 14, the collar 20 is moved outwardly upon the rod upon the threads thereof to a point where it will not be engaged by the flange 22. The operator by graspin the handle 24; may then reciprocate the rod and cause the piston to force lubricants from the injector casing through the discharge-pipe 6. In using solid lubrican s it is frequently desirable however to employ a screwv acting means for forcing the lubricant out. In such case the collar 20 is screwed downwardly upon the threaded flange 22 and then by turning the handle 24, the rod 14 I gasket or packing washer as 25 of yielding material as for instance, leather, felt or the like, as shown in Fig. In such instance the yielding character of the packing will cause the washer tofill the space at the slot -9 to prevent the passage or grease by the piston.

As shown in Fig. 6 a slightly different type of: lock for the inner casing may also be employed, a hook 26 being formed upon the head 10 and arranged to project inwardly upon the SlllfllCD of the barrel 5. A detc nt or pin 27 secured to said barrel and projecting therefrom will afford a means in cooperation with the said hook for locking the parts together. l'Vith this latter form of lock the inner casing may be turned, after the pump has been loaded with lubricants, to a position diametrically opposite to the opening 7, so that heavy oils or liquid lubricants that may be placed in the injector \V1ll not escape between the barrel and the inner casin The operation of the mechanism is obvious from the above description. What I claim is:

1. A lubricator comprising a cylinder ha ing an opening formed in the side thereof a rotating closure for said opening, and

means for expelling the contents of said cylinder after said opening has been closed.

2. A lubricator comprising a cylinder haw ing an opening formed in the sidethereof,

a sleeve mounted upon said cylinder and provided with a side opening adapted to be brought into and out of registry with the opening formed in said cylinder, andmeans for expelling the contents of said cylinder have been moved out of .rel having a longitudinally extending longated opening in its side wall and. having a discharge spout at one end thereof, an inner casing having an elongated opening corresponding with the opening in the bar rel, a head capable of turning said'casing to open or closethe opening in the wells of the injector, a piston fitt ng within said inner casing, means for reciprocating the same, and means connecting the barrel and casnig against longitudmal movement in relation to each other and for limiting the .-i

rotary movement of said inner casing.

A grease gun comprising an innerand an outer casing mounted to rotate one role tively to the other, and the outer casing being provided with a discharge nozzle, said id inner and-outer casings being provided with openings formed longitudinally 'thereotf, means for limiting the rotative movement of said casings relatively, and a plunger mounted in the inner casing to force the contents out through the nozzle, when the longitudinal openings are closed.

(5. A grease gun comprising an inner and an outer casing mounted to rotate one relatively to the other, and the outer casin being provided with a discharge nozzle, sai inner and outer casings being provided with openings formed longitudinally thereof, and:

a plunger mounted in the inner casing to force the contentsout through the nozzle, when the longitudinal openings are closed,

7. A lubricant injector, comprising a, have hereunto subscribed my name this 3rd oylinder having an opening formed in the day of January, 1912. side thereof, a rotating closurejfor sai opening, andn solid piston mounted in said JONATHAN YEE cylinder to expel the contents when said \Vitnesses: v

opening haebeen c10sed., CAsSELL SEVERANOE,

"In Witness that I claim the foregoing I E. R. P0, 

